County annual report · FIPS 24001
2021 Allegany County, MD Power Outage Report
In 2021, customers in Allegany County, MD went without power for an average of 5.0 hours, a total of 163K customer-hours (Maryland average 2.5 hours). That ranks 2nd worst of 24 Maryland counties and 1327th of 2,974 nationally.
Compared with MD, the US and 2020
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Allegany County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 23, 2021 18:30 | August 23, 2021 23:30 | 5h | 6,919 | 6,492 |
| 2 | June 10, 2021 03:15 | June 10, 2021 16:00 | 12h 45m | 3,660 | 9,031 |
| 3 | March 26, 2021 14:45 | March 27, 2021 04:15 | 13h 30m | 2,293 | 4,296 |
| 4 | June 21, 2021 18:00 | June 22, 2021 20:45 | 1d 2h | 2,293 | 6,852 |
| 5 | September 1, 2021 15:00 | September 3, 2021 20:00 | 2d 5h | 2,171 | 21K |
| 6 | July 12, 2021 11:00 | July 12, 2021 22:30 | 11h 30m | 2,166 | 2,334 |
| 7 | March 18, 2021 09:45 | March 18, 2021 11:15 | 1h 30m | 1,771 | 2,657 |
| 8 | August 19, 2021 02:00 | August 20, 2021 18:30 | 1d 16h | 1,762 | 7,437 |
| 9 | May 6, 2021 06:15 | May 6, 2021 09:30 | 3h 15m | 1,735 | 3,489 |
| 10 | August 18, 2021 11:30 | August 18, 2021 23:30 | 12h | 1,604 | 4,606 |
Outage episodes by size in 2021: 62 reached 100+ customers, 13 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Allegany County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| The Potomac Edison Company | 2021 | 3.3 hrs | 1.26 | 2.9 hrs | 1.20 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of Maryland's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 32,504 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Allegany County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Allegany County, MD annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/maryland/allegany-county